^ isro still has very limited capability, and may be limited enthusiasm too. they only have 1 launch centre and manage limited payload launches like 2-4 per year ? and our big neighbor does upto 20.
to be exact, they are also aggressive enough to monopolize asian satellite market. they already offering cheap satellite launches to east asian countries, pakistan srilanka and bangladesh. unless govt considers anything seriously, we will always remain back benchers.
and yes, sending manned space mission is a lot more difficult than sending a mars satellite with nasa help. seriously, isro doesnt even have a vehicle to carry the huge payload of a manned cargo.